The paint on my 8790 is pretty much shot where my left palm rests and the right side is playing a slow game of catch-up. Can actually feel where my left palm rests because of how the paint is reacting to me. My hands don't usually sweat, but since the wristpad area of the 8790 is so hot, it must be making my palms sweat (I check- they feel hot, but not wet

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Alkaline, is the corner of your laptop near anything at all? Do you move your laptop a lot? If you do, is it dragging across anything? (like the power wire- and after daily contacts is wearing it down- just a thought)